waste conveyor belts, part no. 1220 mm widex 630/4x 5+1.5 m 24 (11-12 mm thick) tensile strength 630 kn, 4 ply grade m 24 is: 1891 (part i), top rubber thickness 5 mm, bottom thickness 1.5 mm. acceptable make: plasser, forech, quantum, hilton, mr belt.